| THE Funding Organisation Ltd. | Financial services | 2017 |
| THE Furnishings & Coffee Shop Limited | Wholesale & retail | 2016 |
| THE Glass Lounge Ltd | Hospitality | 2024 |
| THE Good Managing Agent Limited | Real estate | 2024 |
| THE Griffiths Network Limited | Administrative & support | 2017 |
| THE Head Spa Retford Limited | Other services | 2025 |
| THE Homstead Retreat Ltd | Hospitality | 2025 |
| THE Jasmine Trust | Education | 2000 |
| THE Kiwi Coffee House Ltd | Hospitality | 2025 |
| THE Leys Wheatley Limited | Wholesale & retail | 2022 |
| THE Local Therapy Company Limited | Health & social care | 2010 |
| THE Lodge Coffee House Ltd | Hospitality | 2025 |
| THE Mansell Experts Limited | Professional & scientific | 2024 |
| THE Official Mortgage Company Ltd | Financial services | 2015 |
| THE Old Vicarage at Elkesley Camp Site Ltd | Hospitality | 2018 |
| THE Orange Building Company Ltd | Construction | 2021 |
| THE Orange Renovation Company Ltd | Construction | 2025 |
| THE Orange Rental Company Ltd | Extraterritorial | 2025 |
| THE Packet Inn Limited | Hospitality | 2019 |
| THE Pastures North Wheatley Management Company Limited | Households | 2023 |
| THE Pet Lounge Retford Ltd | Other services | 2025 |
| THE Portly Gentleman Limited | Hospitality | 2020 |
| THE Pottery (Retford) Ltd | Arts & recreation | 2024 |
| THE Publics Band Ltd | Arts & recreation | 2021 |
| THE Racking Company Limited | Wholesale & retail | 2005 |
| THE Real Window Fixer Ltd | Construction | 2020 |
| THE Reformer Room (Retford) Limited | Education | 2024 |
| THE Retford Glass Company Limited | Construction | 2017 |
| THE Retford Majestic Theatre Co Ltd | Arts & recreation | 2009 |
| THE River Education Services Limited | Education | 2015 |
| THE Rosary Clinic Limited | Health & social care | 2024 |
| THE School of EI Limited | Professional & scientific | 2025 |
| THE Shared CUP Ltd | Hospitality | 2026 |
| THE Ship Inn Retford Limited | Hospitality | 2024 |
| THE Sleep Diaries Ltd | Health & social care | 2025 |
| THE Solar First Limited | Construction | 2013 |
| THE Strengths Practice Limited | Other services | 2014 |
| THE Till Roll Co. Limited | Wholesale & retail | 1999 |
| THE Truffled PIG Limited | Hospitality | 2022 |
| THE Turks Head (Retford) Limited | Hospitality | 2017 |
| THE Vault Retford Limited | Hospitality | 2024 |
| THE Well Community Projects | Other services | 2006 |
| THE Well Laid Table Limited | Wholesale & retail | 2011 |
| THE Whimsiball Co Ltd | Arts & recreation | 2026 |
| THE Woodyard Ranskill Limited | Manufacturing | 2011 |
| THE YES Catalogue Ltd | Wholesale & retail | 2016 |
| THE YES Mobile Network Ltd | Information & communication | 2017 |
| THE Yiyagi Ltd | Hospitality | 2024 |
| THE Yorkshire Auctioneer Limited | Arts & recreation | 2018 |
| Theaudiobloc Ltd | Information & communication | 2020 |
| Thehoneypot Ltd | Hospitality | 2024 |
| Themeworks Limited | Arts & recreation | 1996 |
| Thetrack.Life Ltd | Wholesale & retail | 2019 |
| Thistle Insurance Services Limited | Financial services | 1938 |
| Three Kings Clothing Limited | Wholesale & retail | 2021 |
| Thrifty Gifty Ltd | Wholesale & retail | 2025 |
| Thrumpton Golden COD Ltd | Hospitality | 2020 |
| Thrumpton Motor Company Limited | Wholesale & retail | 2010 |
| Thrumpton Motor Sales Limited | Wholesale & retail | 2016 |
| Tigga's Saddlery Ltd | Wholesale & retail | 2018 |
| Till Roll Depot Limited | Wholesale & retail | 2011 |
| Time Media Services Limited | Wholesale & retail | 2020 |
| Timewave Networks Limited | Information & communication | 2003 |
| Tirus Limited | Construction | 2010 |
| Titan K9 Grooming Studio Ltd | Other services | 2026 |
| Titan Organisation Ltd | Administrative & support | 2019 |
| Titanium Marketing Limited | Administrative & support | 2006 |
| TM Thai Limited | Administrative & support | 2018 |
| TNG Client Solutions Ltd | Professional & scientific | 2024 |
| TOC Solutions Ltd | Information & communication | 2014 |
| Todd & Co Group Ltd | Real estate | 2025 |
| TOM Barton Farms Ltd | Agriculture & fishing | 2014 |
| Tonmali Thai Massage Ltd | Health & social care | 2024 |
| Tony Brennan Flooring Limited | Construction | 2005 |
| Top Barn Agricultural Services Ltd | Agriculture & fishing | 2025 |
| Top to Bottom Accessories Ltd | Wholesale & retail | 2023 |
| Top to Tail Ltd | Wholesale & retail | 2025 |
| Toparia Environmental Ltd | Agriculture & fishing | 2014 |
| Total Health Care Solutions PVT Ltd Limited | Health & social care | 2019 |
| Trace Data Communications UK Limited | Information & communication | 2023 |
| Trace Locate Recover Ltd | Professional & scientific | 2025 |
| Trace Security Services Limited | Administrative & support | 2025 |
| Tracecomms Ltd | Information & communication | 2013 |
| Trade Dress Limited | Information & communication | 2015 |
| Tradies Ltd | Construction | 2025 |
| Trans-Sport.Tv Limited | Manufacturing | 2014 |
| Transformation Enterprises Ltd | Real estate | 2018 |
| Transformed Property Ltd | Real estate | 2025 |
| Trashfuture Podcast Ltd | Arts & recreation | 2018 |
| Travel MDL Ltd | Administrative & support | 2018 |
| Treatec Ltd | Professional & scientific | 2024 |
| Trent Care Provider Limited | Health & social care | 2021 |
| Trent Heritage Limited | Construction | 2020 |
| Trent Hire and Sales Holdings Limited | Financial services | 2016 |
| Trent Hire and Sales Limited | Wholesale & retail | 1998 |
| Trent Valley Fencing Limited | Professional & scientific | 2010 |
| Trent Valley Homes (Retford) Limited | Construction | 2015 |
| Trentfield Farm Limited | Hospitality | 2019 |
| Trentside Leisure Ltd. | Hospitality | 2023 |
| Triiangle Limited | Wholesale & retail | 2021 |